CN110166268B - Communication method and device of wireless backhaul network - Google Patents

Communication method and device of wireless backhaul network Download PDF

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Publication number
CN110166268B
CN110166268B CN201810149842.1A CN201810149842A CN110166268B CN 110166268 B CN110166268 B CN 110166268B CN 201810149842 A CN201810149842 A CN 201810149842A CN 110166268 B CN110166268 B CN 110166268B
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node
access
base station
backhaul network
wireless backhaul
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CN110166268A (en
Inventor
孙建成
刘佳敏
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Datang Mobile Communications Equipment Co Ltd
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Telecommunications Science and Technology Research Institute Co Ltd
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Priority to CN201810149842.1A priority Critical patent/CN110166268B/en
Priority to US16/968,610 priority patent/US11962468B2/en
Priority to EP18906220.1A priority patent/EP3754904A4/en
Priority to PCT/CN2018/125377 priority patent/WO2019157871A1/en
Publication of CN110166268A publication Critical patent/CN110166268A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603—Arrangements for wireless physical layer control
    • H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/12—Discovery or management of network topologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0893—Assignment of logical groups to network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/244—Connectivity information management, e.g. connectivity discovery or connectivity update using a network of reference devices, e.g. beaconing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The embodiment of the invention provides a wireless backhaul network, a communication method and a communication device, which are used for solving the technical problems of high difficulty and high cost in deploying the backhaul network in the prior art. The wireless backhaul network comprises at least one tree-shaped topological structure, each tree-shaped topological structure in the at least one tree-shaped topological structure consists of a service base station node and at least one relay node, and the root of the tree-shaped topological structure is the service base station node; the relation between any two nodes in the wireless backhaul network is a primary-secondary relation or a non-primary-secondary relation, and any two nodes in the primary-secondary relation are communicated through wireless connection.

Description

Communication method and device of wireless backhaul network
Technical Field
The present invention relates to the field of communications, and in particular, to a wireless backhaul network, a communication method, and an apparatus.
Background
With the continuous development of mobile communication technology, in order to better meet the user requirements and greatly improve the network capacity and throughput, more transmission nodes are inevitably introduced to meet the service requirements of mobile users.
Backhaul networks of access sites in existing mobile communication networks are deployed in a wired backhaul manner, but in current mobile communication networks, not all access sites have wired backhaul conditions, and meanwhile, as the number of access sites continuously increases, the cost for deploying the backhaul networks in the wired manner is also very high. Therefore, the technical problems of high difficulty and high cost of deploying the backhaul network exist in the prior art.
Disclosure of Invention
The embodiment of the invention provides a wireless backhaul network, a communication method and a communication device, which are used for solving the technical problems of high difficulty and high cost in deploying the backhaul network in the prior art.
In a first aspect, an embodiment of the present invention provides a wireless backhaul network, including at least one tree topology structure, where each tree topology node in the at least one tree topology structure is composed of a serving base station node and at least one relay node, and the root of the tree topology structure is the serving base station node;
the relation between any two nodes in the wireless backhaul network is a primary-secondary relation or a non-primary-secondary relation, and any two nodes in the primary-secondary relation are communicated through wireless connection.
The wireless backhaul network in the scheme comprises at least one tree-shaped topological structure, each tree-shaped topological structure in the at least one tree-shaped topological structure is composed of a service base station node and at least one relay node, the root of the tree-shaped topological structure is the service base station node, and the wireless backhaul network is used for communication based on wireless connection between primary and secondary nodes. The wireless backhaul network has a simple and clear topological structure, can well meet the transmission requirement of 5G services with high speed and low time delay, and is easier to deploy and lower in cost compared with the prior art.
Optionally, a parent node of any two nodes in a child-parent relationship is a next-hop node from a child node to the serving base station node.
Optionally, a distance between a parent node of any two nodes in a child-parent relationship and the serving base station is smaller than a distance between a child node and the serving base station node.
Optionally, any relay node in the tree topology has a unique parent node.
The wireless backhaul network provided by the mode has the advantages of simple and clear topological structure, easier deployment and lower cost.
Optionally, when a User Equipment (UE) accesses from any relay node of the wireless backhaul network, a path of data communication between the UE and the serving base station is uniquely determined: and sequentially passing through the paths from each parent node to the service base station from any relay node.
The wireless backhaul network provided by the mode has a simple and clear topological structure, so that the UE can select the initial path more simply and conveniently when the UE carries out a service request.
Optionally, each UE under the serving base station autonomously selects an accessible node, where the accessible node includes a relay node or a serving base station node.
By the method, the UE can select the initial path more simply and conveniently when carrying out the service request.
In a second aspect, an embodiment of the present invention provides a management method for a wireless backhaul network, which is applied to any relay node in the wireless backhaul network according to the first aspect of the present invention, where the method includes: after any relay node is powered on or after an adding instruction is received, initiating an interface establishment process to a parent node of the relay node based on configuration information of an Operation Administration and Maintenance (OAM) system, so that any relay node is added into the wireless backhaul network; wherein, the configuration information of the OAM system includes, but is not limited to, address information of a parent node of any relay node.
By the management method, the initial construction and the new node addition of the wireless backhaul network in the first aspect of the embodiment of the invention can be realized, the transmission requirements of the 5G service with high speed and low time delay can be better met, the lower complexity and the lower overhead can be ensured, the system efficiency can be improved, and the user experience can be ensured.
Optionally, after the interface establishment procedure is completed, the method further includes: after receiving the deletion instruction, the any relay node initiates an interface deletion process to a parent node of the relay node based on the configuration information of the OAM system, so that the any relay node is deleted from the wireless backhaul network.
By the method, the node deletion of the wireless backhaul network can be maintained, the system safety is ensured, the transmission requirements of 5G services with high speed and low time delay are better met, and the user experience is improved.
Optionally, before initiating an interface deletion process to its own parent node, the method further includes: it is determined that it does not have a child node.
By the method, the reliability of the management process can be guaranteed, and the influence on the normal work of other nodes when the node to be deleted is avoided.
Optionally, the configuration information of the OAM system further includes address information of a new parent node of any relay node; after the interface establishment procedure is completed, the method further comprises: after receiving a parent node update instruction, the any relay node initiates an interface replacement process based on the configuration information of the OAM system, so as to replace the current parent node of the any relay node with the new parent node.
Optionally, the configuration information of the OAM system further includes address information of a standby parent node of any relay node; after the interface establishment procedure is completed, the method further comprises: and when detecting that the current parent node fails, the any relay node initiates an interface replacement process based on the configuration information of the OAM system so as to replace the current parent node of the any relay node with the standby parent node.
Optionally, the configuration information of the OAM system further includes address information of all available parent nodes of any relay node; and when detecting that the signal value of any relay node is better than that of the available parent node of the current parent node, initiating an interface replacement process based on the configuration information of the OAM system so as to replace the current parent node of any relay node with the available parent node of which the signal value is better than that of the current parent node.
Through the three optional implementation modes, node replacement operation can be performed on the wireless backhaul network in the embodiment of the invention, system safety is ensured, transmission requirements of 5G services with high speed and low time delay are better met, and user experience is improved.
Optionally, after the interface establishment procedure is completed, the method further includes: and when detecting that the relay node has a fault, the relay node initiates an interface deletion process to a parent node of the relay node based on the configuration information of the OAM system so as to delete the relay node from the wireless backhaul network.
By the method, the wireless backhaul network can be abnormally maintained, the failed node can be removed in time, the system safety is ensured, the transmission requirement of 5G service with high speed and low time delay is better met, and the user experience is improved.
Optionally, before initiating an interface deletion process to its own parent node, the method further includes: notifying the OAM system to delete a child node of the any relay node from the wireless backhaul network; or, notifying the child node of any relay node that any relay node fails, so that the child node of any relay node initiates an interface establishment process to a standby parent node according to the configuration information of the OAM system.
By the method, the wireless backhaul network can be abnormally maintained, when a node fails, the failed node is timely deleted, and the child node is reconfigured, so that the system safety is ensured, the transmission requirements of 5G services on high speed and low time delay are better met, and the user experience is improved.
In a third aspect, an embodiment of the present invention provides a communication method for a wireless backhaul network, where the method is applied to a UE that performs data communication based on the wireless backhaul network in the first aspect of the embodiment of the present invention, and the method includes: the UE accesses an access node of the wireless backhaul network; and sending an access request to the access node so that the access node transmits the access request to the service base station through a path between the access node and the service base station.
The UE in this embodiment of the present invention performs data communication based on the wireless backhaul network of the first aspect of the embodiment of the present invention, can simply and conveniently select a backhaul path, ensure transmission quality, well meet the transmission requirement of a 5G service with high rate and low delay, and ensure user experience.
Optionally, before accessing the access node of the wireless backhaul network, the method further includes: determining a node where a cell where the UE currently resides is the access node; or selecting the optimal cell of the UE according to the cell selection/reselection strategy, and determining the node where the optimal cell is located as the access node.
By the method, the UE can simply and conveniently select the access node, so that a return path is determined, the transmission quality is guaranteed, the transmission requirement of 5G services with high speed and low time delay is well met, and the user experience is guaranteed.
Optionally, before accessing the access node of the UE, the method further includes: determining nodes accessible to the UE according to the cell residence conditions of the UE; a serving cell provided by a node accessible to the UE meets a cell residence condition of the UE; judging whether each node accessible to the UE is a serving base station node or a relay node; and when determining that the nodes accessible to the UE comprise the relay node and the service base station node, determining that the service base station node is the access node or determining the access node according to the time delay requirement of the service requested by the UE.
By the method, the UE can simply and flexibly select the access node, further determine the return path, ensure the transmission quality, well meet the transmission requirement of 5G services with high speed and low time delay, and ensure the user experience.
Optionally, before determining whether each node accessible to the UE is the serving base station node or the relay node, the method further includes: receiving a system broadcast including information indicating respective nodes accessible to the UE as serving base station nodes or relay nodes.
Through the method, the UE can judge whether each node accessible to the UE is the serving base station node or the relay node based on system broadcasting, so that a proper access node is selected, a return path is determined, the transmission quality is guaranteed, the transmission requirement of 5G services with high speed and low time delay is well met, and the user experience is guaranteed.
Optionally, determining an access node according to the delay requirement of the service requested by the UE includes: determining the serving base station node as the access node when determining that the time delay requirement of the service requested by the UE is low time delay; and when the time delay requirement of the service requested by the UE is determined to be high time delay, determining the relay node as the access node.
By the method, the UE can flexibly select the access node based on the time delay requirement of the requested service, determine the return path, ensure the transmission quality, well meet the transmission requirement of the 5G service with high speed and low time delay, and ensure the user experience.
In a fourth aspect, an embodiment of the present invention provides a communication method for a wireless backhaul network, where the method is applied to a serving base station node in the wireless backhaul network according to the first aspect of the embodiment of the present invention, and the method includes: receiving an access request transmitted by UE; processing the access request, generating an access response, and configuring a service transmission path for the UE; and sending the access response and the service transmission path to the UE.
Optionally, the configuring a service transmission path for the UE includes: determining a path of the UE for transmitting the access request as the service transmission path; or determining a path different from a path through which the UE transmits the access request as the service transmission path.
Optionally, after sending the access response and the service transmission path to the UE, the method further includes: receiving a measurement report reported by the UE in the process of carrying out service transmission with the UE; and configuring a new service transmission path for the UE according to the measurement report, and sending the new service transmission path to the UE so that the UE performs service transmission with the service base station based on the new service transmission path.
In a fifth aspect, an embodiment of the present invention provides an apparatus for managing a wireless backhaul network, where the apparatus is located at any relay node in the wireless backhaul network according to the first aspect of the present invention, and the apparatus includes: the processing unit is used for determining to initiate an interface establishment process to a parent node of the processing unit based on configuration information of an OAM system after the device is detected to be powered on or after the joining instruction is received; wherein the configuration information of the OAM system includes, but is not limited to, address information of a parent node of the device; a sending unit, configured to initiate an interface establishment procedure to the parent node, so that the apparatus joins the wireless backhaul network.
Optionally, the processing unit is further configured to: and after receiving a deletion instruction, initiating an interface deletion process to a parent node of the device based on the configuration information of the OAM system so as to delete the device from the wireless backhaul network.
Optionally, the processing unit is further configured to: determining that the apparatus does not have a child node before initiating an interface deletion process to its parent node.
Optionally, the configuration information of the OAM system further includes address information of a new parent node of the device; the processing unit is further to: after receiving a parent node update instruction, initiating an interface replacement process based on configuration information of the OAM system to replace a current parent node of the device with the new parent node.
Optionally, the configuration information of the OAM system further includes address information of a standby parent node of the device; the processing unit is further to: and when the current parent node is detected to have a fault, initiating an interface replacement process based on the configuration information of the OAM system so as to replace the current parent node of the device with the standby parent node.
Optionally, the configuration information of the OAM system further includes address information of all available parent nodes of the device; the processing unit is further to: upon detecting an available parent node having a signal value better than a current parent node, initiating an interface replacement procedure based on configuration information of the OAM system to replace the device's current parent node with the available parent node having the signal value better than the current parent node.
Optionally, the processing unit is further configured to: and when the device detects that the device has a fault, initiating an interface deletion process to a parent node of the device based on the configuration information of the OAM system so as to delete the device from the wireless backhaul network.
Optionally, the sending unit is further configured to: before the processing unit initiates an interface deletion process to a parent node of the processing unit, notifying the OAM system to delete a child node of the device from the wireless backhaul network; or before the processing unit initiates an interface deletion process to its own parent node, notifying the child node of the device that the device fails, so that the child node of the device initiates an interface establishment process to a standby parent node according to the configuration information of the OAM system.
In a sixth aspect, an embodiment of the present invention provides a communication apparatus of a wireless backhaul network, including: an access unit, configured to access an access node of the wireless backhaul network; and the sending unit is used for sending an access request to the access node so that the access node transmits the access request to the service base station through a path between the access node and the service base station.
Optionally, the access unit is further configured to: determining, before accessing an access node of the wireless backhaul network, that a node in which a cell in which the apparatus currently resides is the access node; or before accessing an access node of the wireless backhaul network, selecting an optimal cell of the device according to a cell selection/reselection strategy, and determining that the node where the optimal cell is located is the access node.
Optionally, the access unit is further configured to: determining, prior to accessing an access node of the apparatus, a node accessible to the apparatus according to a cell camping condition of the apparatus; wherein a serving cell provided by a node accessible to the apparatus satisfies a cell camping condition of the apparatus; judging whether each node accessible to the device is a serving base station node or a relay node; when the nodes accessible to the device comprise the relay node and the service base station node, determining the service base station node as the access node or determining the access node according to the time delay requirement of the service requested by the device.
Optionally, the access unit is further configured to: before determining whether each node accessible to the apparatus is the serving base station node or a relay node, receiving a system broadcast including information indicating whether each node accessible to the apparatus is a serving base station node or a relay node.
Optionally, the access unit is configured to: determining the serving base station node as the access node when determining that the time delay requirement of the service requested by the device is low time delay; and when the time delay requirement of the service requested by the device is determined to be high time delay, determining the relay node as the access node.
In a seventh aspect, an embodiment of the present invention provides a communication apparatus of a wireless backhaul network, including: a receiving unit, configured to receive an access request transmitted by a UE; a processing unit, configured to process the access request, generate an access response, and configure a service transmission path for the UE; and a sending unit, configured to send the access response and the service transmission path to the UE.
Optionally, the processing unit is configured to: determining a path of the UE for transmitting the access request as the service transmission path; or determining a path different from a path through which the UE transmits the access request as the service transmission path.
Optionally, the processing unit is further configured to: after the sending unit sends the access response and the service transmission path to the UE, receiving a measurement report reported by the UE in a service transmission process with the UE; and configuring a new service transmission path for the UE according to the measurement report, and sending the new service transmission path to the UE so that the UE performs service transmission with the device based on the new service transmission path.
In an eighth aspect, an embodiment of the present invention provides a communication device of a wireless backhaul network, including: the system comprises at least one processor, a memory and a communication interface, wherein the memory and the communication interface are in communication connection with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the at least one processor performs the method according to any one of the optional embodiments of the second, third or fourth aspects of the embodiments of the present invention using the communication interface by executing the instructions stored by the memory.
In a ninth aspect, the present invention provides a computer-readable storage medium, which stores computer instructions that, when executed on a computer, cause the computer to perform the method according to any one of the optional embodiments of the second, third or fourth aspects of the present invention.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
the wireless backhaul network provided by the technical scheme of the embodiment of the invention comprises at least one tree-shaped topological structure, each tree-shaped topological node in the at least one tree-shaped topological structure consists of one service base station node and at least one relay node, the root of the tree-shaped topological structure is the service base station node, and the wireless backhaul network carries out communication based on wireless connection between primary and secondary nodes. The wireless backhaul network has a simple and clear topological structure, can well meet the transmission requirement of 5G services with high speed and low time delay, and is easier to deploy and lower in cost compared with the prior art.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic diagram of a topology of a wireless backhaul network according to an embodiment of the present invention;
fig. 2 is a flowchart of a communication method of a wireless backhaul network according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a management apparatus of a wireless backhaul network according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a communication device of a wireless backhaul network according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a communication device of a wireless backhaul network according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a communication device of a wireless backhaul network according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention are described in detail below with reference to the drawings and the specific embodiments, and it should be understood that the specific features in the embodiments and the embodiments of the present invention are not intended to limit the technical solutions of the present invention, but may be combined with each other without conflict.
The embodiment of the invention provides a wireless backhaul network, a communication method and a communication device, which are used for solving the technical problems of high difficulty and high cost in deploying the backhaul network in the prior art. The method and the device are based on the same inventive concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.
It is to be understood that the terms first, second, and the like in the description of the embodiments of the invention are used for distinguishing between the descriptions and not necessarily for describing a sequential or chronological order. "plurality" in the description of the embodiments of the present invention means two or more.
The term "and/or" in the embodiment of the present invention is only one kind of association relationship describing an associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The embodiment of the invention can be applied to a 5G system; the present invention is also applicable to other wireless Communication systems, such as Long Term Evolution (LTE) System, Global System for Mobile Communication (GSM) System, Mobile Communication System (UMTS), Code Division Multiple Access (CDMA) System, and new network equipment System.
The user terminal UE according to the embodiments of the present invention may be a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. Wireless user terminals, which may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. A wireless User Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device.
A base station according to embodiments of the present invention may be configured to interconvert received air frames and IP packets as a router between a wireless terminal device and a remainder of an access network, where the remainder of the access network may include an Internet Protocol (IP) network device. The base station may also coordinate management of attributes for the air interface. For example, the Base Station may be a network device in a 5G System, such as a Next generation Base Station (gNB), a Base Transceiver Station (BTS) in a Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB) in a Wideband Code Division Multiple Access (WCDMA), or an evolved Node B (eNB) in LTE, which is not limited in the embodiments of the present invention.
The embodiment of the invention provides a wireless backhaul network, which comprises at least one tree-shaped topological structure, wherein each tree-shaped topological node in the at least one tree-shaped topological structure consists of a service base station node and at least one relay node, and the root of the tree-shaped topological structure is the service base station node.
The link from the serving base station to the relay node direction is a downlink, and the link from the relay node to the serving base station direction is an uplink.
The service base station and the relay node, and the relay node can be connected and communicated in a wireless mode, and the two nodes connected and communicated in the wireless mode are in a primary-secondary relationship. The parent node of any two nodes in child-parent relationship is the next hop node from the child node to the serving base station node (i.e., on the uplink).
In the implementation process, the parent node and the child node may also be distinguished by using a path loss between the node and the serving base station, a distance between the node and the serving base station, strength of a beacon, a pilot, or a synchronization signal of the serving base station received at the node, or the like. For example, a distance between a parent node and the serving base station in two relay nodes in a child-parent relationship is usually smaller than a distance between a child node and the serving base station, and the strength of a serving base station signal received by the parent node is usually greater than the strength of a serving base station signal received by the child node. In addition, in the specific implementation, in order to make the parent node obtain better base station received signals, the parent node can also be installed in an overhead manner.
For example, fig. 1 is a schematic diagram of a wireless backhaul network according to an embodiment of the present invention, where the wireless backhaul network includes a tree topology with a serving base station node 0 as a root, and in an actual situation, the wireless backhaul network may also have a plurality of such tree topologies. In this topology, the serving base station node 0 is a parent node of the relay node 1, the relay node 2, and the relay node 3, the relay node 1 is a parent node of the relay node 4, the relay node 5, and the relay node 6, and the relay node 4 is a parent node of the relay node 13 and the relay node 14, which will not be described here.
Optionally, each relay node in the tree topology has only one parent node. Any relay node may have multiple child nodes, or may have only one child node, or if the relay node is a relay node at the end of the topology structure, the relay node may not have a child node.
For example, with continued reference to fig. 1, relay node 6 has only one child node, while relay node 1 has 4 child nodes, and the endmost relay node 8 does not have a child node.
Optionally, when the UE accesses from any relay node of the wireless backhaul network, the path where the UE performs data communication with the serving base station is uniquely determined: and sequentially passing through the paths from each parent node to the service base station from any relay node.
For example, with continued reference to fig. 1, after the UE1 accesses the relay node 13, the path of the UE1 to the serving base station node 0 is uniquely determined as: UE1 → relay node 13 → relay node 4 → relay node 1 → serving base station node 0.
Optionally, each UE under the serving base station autonomously selects an accessible node, where the accessible node includes a relay node or a serving base station node.
For example, with continued reference to fig. 1, the UE2 may access the wireless backhaul network from the relay node 11 and may also access the wireless backhaul network from the relay node 12. When the UE2 accesses the wireless backhaul network from the relay node 11, the communication path is: UE2 → relay node 11 → relay node 3 → serving base station node 0; when the UE2 accesses the wireless backhaul network from the relay node 12, the communication path is: UE2 → relay node 12 → relay node 1 → serving base station node 0.
The wireless backhaul network provided by the embodiment of the present invention includes at least one tree topology structure, each tree topology node in the at least one tree topology structure is composed of a serving base station node and at least one relay node, the root of the tree topology structure is the serving base station node, and the wireless backhaul network performs communication based on wireless connection between the primary and secondary nodes. The wireless backhaul network has a simple and clear topological structure, can well meet the transmission requirement of 5G services with high speed and low time delay, and is easier to deploy and lower in cost compared with the prior art.
Based on the same inventive concept, the embodiment of the invention also provides a management method of the wireless backhaul network, which is used for initially constructing and maintaining the wireless backhaul network. The method can be applied to any node in the wireless backhaul network, and each node in the wireless backhaul network can independently execute the method. The management method specifically comprises the following aspects:
1) the initial establishment method of the wireless backhaul network topology comprises the following steps:
the OAM system is configured with configuration information on each node in advance, and the configuration information on each relay node at least comprises the address information of the own parent node. After each relay node is powered on, an interface establishment process is initiated to the parent node of each relay node based on configuration information pre-configured by an OAM system.
2) The node adding method of the wireless backhaul network comprises the following steps:
similar to the initial establishment method, after receiving the joining instruction, the new node initiates an interface establishment process to the parent node of itself based on the configuration information of the OAM system, so that it joins the wireless backhaul network; wherein, the configuration information of the OAM system includes but is not limited to address information of a parent node of the new node.
The source of the join instruction may have various implementations, such as: the OAM system may be preconfigured, or may be an instruction manually input on the new node, and the embodiment of the present invention is not limited in particular.
3) The node deleting method of the wireless backhaul network comprises the following steps:
after any relay node in the wireless backhaul network receives the deletion instruction, an interface deletion process is initiated to a parent node of the relay node based on configuration information of an OAM system, so that any relay node is deleted from the wireless backhaul network.
In the specific implementation process, before initiating the interface deletion process to the parent node of itself, the method further includes: it is determined that it does not have a child node.
That is, when performing delete maintenance, any end node in the topology (i.e., a node without a child node) may be removed, but a node with a child node cannot be removed individually. If removal is necessary, the node and all children of the node should be removed, or a new parent node configured for the children of the node. For example, referring to fig. 1, if the relay node 4 is to be removed, the relay nodes 13 and 14 are also to be removed.
4) A node replacement method for a wireless backhaul network. Including but not limited to the following three cases:
a. after any relay node in the wireless backhaul network receives a parent node update instruction, an interface replacement process is initiated based on the configuration information of the OAM system, so that the current parent node of any relay node is replaced with the new parent node. The OAM configuration information on any relay node includes address information of a new parent node of any relay node. The source of the update instruction may have various implementation manners, like the add instruction described above, such as: the OAM system may be preconfigured, or may be an instruction manually input on the new node, and the embodiment of the present invention is not limited in particular.
b. When any relay node in the wireless backhaul network detects that a current parent node fails, an interface replacement process is initiated based on configuration information of the OAM system, so that the current parent node of any relay node is replaced with the standby parent node. Wherein, the configuration information of the OAM system includes, but is not limited to, address information of a standby parent node of any relay node.
c. When any relay node in the wireless backhaul network detects that a signal value is superior to an available parent node of a current parent node, an interface replacement process is initiated based on configuration information of the OAM system, so that the current parent node of any relay node is replaced with the available parent node of which the signal value is superior to the current parent node. Wherein, the configuration information of the OAM system includes, but is not limited to, address information of all available parent nodes of any relay node.
In a specific implementation process, the above various alternative process specific implementations may include: after initiating an interface deletion process to the current parent node, initiating an interface establishment process to a new parent node (a standby parent node); or after initiating the interface establishment process to the new parent node (standby parent node), initiating the interface deletion process to the current parent node.
5) Exception handling of the wireless backhaul network:
when detecting that a relay node in a wireless backhaul network fails, any relay node in the wireless backhaul network may initiate an interface deletion process to a parent node of the relay node based on configuration information of an OAM system, so that the relay node is deleted from the wireless backhaul network.
Meanwhile, the OAM system is informed to delete the child nodes of any relay node from the wireless backhaul network or to perform parent node reconfiguration on the child nodes of any relay node; or notifying the child node of any relay node that any relay node fails to initiate an interface establishment process to the standby parent node according to the configuration information of the OAM system, or not notifying the OAM system nor the child node thereof, but the child node directly judging the interface abnormality according to the communication state on the interface by itself, then executing a deletion process to the interface, and selecting the standby parent node and initiating an interface connection.
By the management method, the initial construction and the subsequent maintenance of the wireless backhaul network can be realized, the transmission requirements of 5G services with high speed and low time delay can be better met, the lower complexity and the lower cost are ensured, the system efficiency is improved, and the user experience is ensured.
Based on the same inventive concept, an embodiment of the present invention further provides a communication method of a wireless backhaul network, and with reference to fig. 2, the method includes:
step 101: and the UE accesses an access node of the wireless backhaul network.
The specific implementation manners of accessing the access node include, but are not limited to, the following two manners:
A. the system information broadcast may indicate whether the cell where the UE currently resides is served by the relay node, and may also broadcast resource information (e.g., information such as frequency band and time slot) of each relay node, and delay information of the wireless backhaul of each relay node, and the like. Then, when the UE initially accesses, it may decide to select a suitable relay node or serving base station node to serve itself according to information such as its service characteristics (delay requirement, etc.), subscription information, and user policy.
For example, first, the node where the serving cell satisfies the cell camping condition of the UE is determined, and these nodes are taken as the nodes accessible to the UE. Then, a final access node is screened out from the nodes accessible to the UE: judging whether each node accessible to the UE is a serving base station node or a relay node according to system broadcasting (including information for indicating that each node accessible to the UE is a serving base station node or a relay node); if the node accessible to the UE is determined to include the relay node and the serving base station node, the serving base station node may be directly determined to be the access node, or the access node may be determined according to the delay requirement of the service requested by the UE (for example, if the delay requirement of the service requested by the UE is low delay, the serving base station node may be determined to be the access node, and if the delay requirement of the service requested by the UE is high delay, the relay node may be determined to be the access node).
B. Whether the cell in which the UE currently resides is served by the relay node may not be indicated in the system information broadcast. In this case, the UE may directly access the node where the cell where the UE currently resides as the access node, or may select the optimal cell of the UE according to a cell selection/reselection policy and access the node where the optimal cell is located.
Of course, in a specific implementation process, the UE may also directly select an optimal cell of the UE according to a cell selection/reselection policy when selecting the camping cell, and then directly access a node where the currently camped optimal cell is located when accessing the wireless backhaul network.
Step 102: and the UE sends an access request to the access node so that the access node transmits the access request to the service base station through a path between the access node and the service base station.
If the access node selected by the UE is a relay node, then the path from the access node to the serving base station is also uniquely determined. The UE will send the access request to the currently serving access node, which will send it to the parent node, and so on, to the serving base station.
Correspondingly, after receiving an access request transmitted by the UE, the serving base station processes the access request, generates an access response, and configures a service transmission path for the UE; and then sending the access response and the service transmission path to the UE so that the UE performs service transmission based on the service transmission path.
The specific implementation manner of the serving base station configuring the service transmission path for the UE may be two: 1) Determining a path of the UE for transmitting the access request as the service transmission path; 2) and determining a path different from the path of the UE for transmitting the access request as the service transmission path.
In addition, in the process of service transmission by the UE, the serving base station may further receive a measurement report reported by the UE, configure a new service transmission path for the UE according to the measurement report, and send the new service transmission path to the UE, so that the UE performs service transmission with the serving base station based on the new service transmission path.
By the communication method, when the UE carries out service request based on the backhaul network, the initial path can be selected more simply and conveniently, and better path selection and transmission guarantee can be adopted for the accessed UE, so that the transmission requirement of 5G service with high speed and low time delay can be well met, lower complexity and cost are ensured, the efficiency of a 5G system is improved, and user experience is ensured.
Based on the same inventive concept, an embodiment of the present invention further provides a management apparatus for a wireless backhaul network, where the apparatus is located on any relay node in the wireless backhaul network, and with reference to fig. 3, the apparatus includes:
a processing unit 201, configured to determine, based on configuration information of the OAM system, to initiate an interface establishment procedure to a parent node of the device after detecting that the device is powered on or after receiving the join instruction; wherein the configuration information of the OAM system includes, but is not limited to, address information of a parent node of the device;
a sending unit 202, configured to initiate an interface establishment procedure to the parent node, so that the apparatus joins the wireless backhaul network.
Optionally, the processing unit 201 is further configured to:
and after receiving a deletion instruction, initiating an interface deletion process to a parent node of the device based on the configuration information of the OAM system so as to delete the device from the wireless backhaul network.
Optionally, the processing unit 201 is further configured to:
determining that the apparatus does not have a child node before initiating an interface deletion process to its parent node.
Optionally, the configuration information of the OAM system further includes address information of a new parent node of the device; the processing unit 201 is further configured to:
after receiving a parent node update instruction, initiating an interface replacement process based on configuration information of the OAM system to replace a current parent node of the device with the new parent node.
Optionally, the configuration information of the OAM system further includes address information of a standby parent node of the device; the processing unit 201 is further configured to:
and when the current parent node is detected to have a fault, initiating an interface replacement process based on the configuration information of the OAM system so as to replace the current parent node of the device with the standby parent node.
Optionally, the configuration information of the OAM system further includes address information of all available parent nodes of the device; the processing unit 201 is further configured to:
upon detecting an available parent node having a signal value better than a current parent node, initiating an interface replacement procedure based on configuration information of the OAM system to replace the device's current parent node with the available parent node having the signal value better than the current parent node.
Optionally, the processing unit 201 is further configured to:
and when the device detects that the device has a fault, initiating an interface deletion process to a parent node of the device based on the configuration information of the OAM system so as to delete the device from the wireless backhaul network.
Optionally, the sending unit 202 is further configured to:
before the processing unit 201 initiates an interface deletion process to its parent node, notifying the OAM system to delete a child node of the device from the wireless backhaul network; or
Before the processing unit 201 initiates an interface deletion process to its own parent node, the child node of the device is notified that the device fails, so that the child node of the device initiates an interface establishment process to a standby parent node according to the configuration information of the OAM system.
The specific implementation manner of the operations performed by the above units may refer to corresponding steps in the management method of the wireless backhaul network according to the embodiment of the present invention, and the embodiment of the present invention is not described again.
Based on the same inventive concept, an embodiment of the present invention further provides a communication apparatus of a wireless backhaul network, and with reference to fig. 4, the apparatus includes:
an access unit 301, configured to access an access node of the wireless backhaul network;
a sending unit 302, configured to send an access request to the access node, so that the access node transmits the access request to the serving base station through a path between the access node and the serving base station.
Optionally, the access unit 301 is further configured to:
determining, before accessing an access node of the wireless backhaul network, that a node in which a cell in which the apparatus currently resides is the access node; or
Before accessing an access node of the wireless backhaul network, selecting an optimal cell of the device according to a cell selection/reselection strategy, and determining that the node where the optimal cell is located is the access node.
Optionally, the access unit 301 is further configured to:
determining, prior to accessing an access node of the apparatus, a node accessible to the apparatus according to a cell camping condition of the apparatus; wherein a serving cell provided by a node accessible to the apparatus satisfies a cell camping condition of the apparatus;
judging whether each node accessible to the device is a serving base station node or a relay node;
when the nodes accessible to the device comprise the relay node and the service base station node, determining the service base station node as the access node or determining the access node according to the time delay requirement of the service requested by the device.
Optionally, the access unit 301 is further configured to:
before determining whether each node accessible to the apparatus is the serving base station node or a relay node, receiving a system broadcast including information indicating whether each node accessible to the apparatus is a serving base station node or a relay node.
Optionally, the access unit 301 is configured to:
determining the serving base station node as the access node when determining that the time delay requirement of the service requested by the device is low time delay;
and when the time delay requirement of the service requested by the device is determined to be high time delay, determining the relay node as the access node.
The specific implementation manner of the operations performed by the above units may refer to the corresponding steps performed by the UE in the communication method of the wireless backhaul network according to the embodiment of the present invention, and the embodiment of the present invention is not described again.
Based on the same inventive concept, an embodiment of the present invention further provides a communication apparatus of a wireless backhaul network, and with reference to fig. 5, the apparatus includes:
a receiving unit 401, configured to receive an access request transmitted by a UE;
a processing unit 402, configured to process the access request, generate an access response, and configure a service transmission path for the UE;
a sending unit 403, configured to send the access response and the service transmission path to the UE.
Optionally, the processing unit 402 is configured to:
determining a path of the UE for transmitting the access request as the service transmission path; or
And determining a path different from the path of the UE for transmitting the access request as the service transmission path.
Optionally, the processing unit 402 is further configured to:
after the sending unit 403 sends the access response and the service transmission path to the UE, in a process of performing service transmission with the UE, receiving a measurement report reported by the UE;
and configuring a new service transmission path for the UE according to the measurement report, and sending the new service transmission path to the UE so that the UE performs service transmission with the device based on the new service transmission path.
The specific implementation manner of the operations performed by each unit may refer to corresponding steps performed by the serving base station in the communication method of the wireless backhaul network according to the embodiment of the present invention, and the embodiment of the present invention is not described again.
Based on the same inventive concept, an embodiment of the present invention further provides a communication device of a wireless backhaul network, and with reference to fig. 6, the device includes:
at least one processor 501, and
a memory 502, a communication interface 503 communicatively coupled to the at least one processor 501;
the memory 502 stores instructions executable by the at least one processor 501, and the at least one processor 501 executes the instructions stored in the memory 502 to perform the management method or the communication method of the wireless backhaul network according to the embodiment of the present invention by using the communication interface 503.
Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is caused to execute the management method or the communication method of the wireless backhaul network according to the embodiment of the present invention.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (16)

1. A communication method of a wireless backhaul network is characterized in that the method is applied to UE which carries out data communication based on the wireless backhaul network; the wireless backhaul network comprises at least one tree-shaped topological structure, each tree-shaped topological structure in the at least one tree-shaped topological structure consists of a service base station node and at least one relay node, and the root of the tree-shaped topological structure is the service base station node; the relation between any two nodes in the wireless backhaul network is a primary-secondary relation or a non-primary-secondary relation, and any two nodes in the primary-secondary relation are communicated through wireless connection; any relay node in the tree topology structure has a unique parent node; when the UE accesses from any relay node of the wireless backhaul network, uniquely determining a path of data communication between the UE and the serving base station node: a path from any one relay node to the serving base station node sequentially through each parent node;
the method comprises the following steps:
the UE accesses an access node of the wireless backhaul network;
sending an access request to the access node so that the access node transmits the access request to a serving base station node through a path between the access node and the serving base station node;
wherein after sending the access request to the access node, the method further comprises:
receiving an access response and a service transmission path; the service transmission path is a path through which the UE transmits the access request, or the service transmission path is a path different from a path through which the UE transmits the access request.
2. The method of claim 1, prior to accessing an access node of the wireless backhaul network, further comprising:
determining a node where a cell where the UE currently resides is the access node; or
And selecting the optimal cell of the UE according to the cell selection/reselection strategy, and determining the node where the optimal cell is located as the access node.
3. The method of claim 1, wherein prior to accessing an access node of the UE, further comprising:
determining nodes accessible to the UE according to the cell residence conditions of the UE; a serving cell provided by a node accessible to the UE meets a cell residence condition of the UE;
judging whether each node accessible to the UE is a serving base station node or a relay node;
and when determining that the nodes accessible to the UE comprise the relay node and the service base station node, determining that the service base station node is the access node or determining the access node according to the time delay requirement of the service requested by the UE.
4. The method of claim 3, wherein prior to determining whether each node accessible to the UE is the serving base station node or a relay node, further comprising:
receiving a system broadcast including information indicating respective nodes accessible to the UE as serving base station nodes or relay nodes.
5. The method of claim 3, wherein determining an access node based on latency requirements of the service requested by the UE comprises:
determining the serving base station node as the access node when determining that the time delay requirement of the service requested by the UE is low time delay;
and when the time delay requirement of the service requested by the UE is determined to be high time delay, determining the relay node as the access node.
6. A communication method of a wireless backhaul network is characterized in that the method is applied to a service base station node in the wireless backhaul network; the wireless backhaul network comprises at least one tree-shaped topological structure, each tree-shaped topological structure in the at least one tree-shaped topological structure consists of one serving base station node and at least one relay node, and the root of the tree-shaped topological structure is the serving base station node; the relation between any two nodes in the wireless backhaul network is a primary-secondary relation or a non-primary-secondary relation, and any two nodes in the primary-secondary relation are communicated through wireless connection; any relay node in the tree topology structure has a unique parent node; when the UE accesses from any relay node of the wireless backhaul network, the path of data communication between the UE and the service base station node is uniquely determined: a path from any one relay node to the serving base station node sequentially through each parent node;
the method comprises the following steps:
receiving an access request transmitted by the UE;
processing the access request, generating an access response, and configuring a service transmission path for the UE;
sending the access response and the service transmission path to the UE;
wherein the configuring a service transmission path for the UE includes:
determining a path of the UE for transmitting the access request as the service transmission path; or
And determining a path different from the path of the UE for transmitting the access request as the service transmission path.
7. The method of claim 6, wherein after transmitting the access response, the traffic transmission path, to the UE, further comprising:
receiving a measurement report reported by the UE in the process of carrying out service transmission with the UE;
and configuring a new service transmission path for the UE according to the measurement report, and sending the new service transmission path to the UE so that the UE performs service transmission with the serving base station node based on the new service transmission path.
8. A communication apparatus of a wireless backhaul network, characterized by; the wireless backhaul network comprises at least one tree-shaped topological structure, each tree-shaped topological structure in the at least one tree-shaped topological structure consists of a service base station node and at least one relay node, and the root of the tree-shaped topological structure is the service base station node; the relation between any two nodes in the wireless backhaul network is a primary-secondary relation or a non-primary-secondary relation, and any two nodes in the primary-secondary relation are communicated through wireless connection; any relay node in the tree topology structure has a unique parent node; when the communication device accesses from any relay node of the wireless backhaul network, uniquely determining a path for data communication between the communication device and the serving base station node: a path from any one relay node to the serving base station node sequentially through each parent node;
the communication apparatus includes:
an access unit, configured to access an access node of the wireless backhaul network;
a sending unit, configured to send an access request to the access node, so that the access node transmits the access request to the serving base station node through a path between the access node and the serving base station node;
wherein the communication device further comprises: a receiving unit, configured to receive an access response and a service transmission path after the sending unit sends an access request to the access node; wherein the service transmission path is a path through which the communication device transmits the access request, or the service transmission path is a path different from a path through which the communication device transmits the access request.
9. The apparatus of claim 8, wherein the access unit is further to:
determining, before accessing an access node of the wireless backhaul network, that a node in which a cell in which the apparatus currently resides is the access node; or
Before accessing an access node of the wireless backhaul network, selecting an optimal cell of the device according to a cell selection/reselection strategy, and determining that the node where the optimal cell is located is the access node.
10. The apparatus of claim 8, wherein the access unit is further to:
determining, prior to accessing an access node of the apparatus, a node accessible to the apparatus according to a cell camping condition of the apparatus; wherein a serving cell provided by a node accessible to the apparatus satisfies a cell camping condition of the apparatus;
judging whether each node accessible to the device is a serving base station node or a relay node;
when the nodes accessible to the device comprise the relay node and the service base station node, determining the service base station node as the access node or determining the access node according to the time delay requirement of the service requested by the device.
11. The apparatus of claim 10, wherein the access unit is further to:
before determining whether each node accessible to the apparatus is the serving base station node or a relay node, receiving a system broadcast including information indicating whether each node accessible to the apparatus is a serving base station node or a relay node.
12. The apparatus of claim 10, wherein the access unit is to:
determining the serving base station node as the access node when determining that the time delay requirement of the service requested by the device is low time delay;
and when the time delay requirement of the service requested by the device is determined to be high time delay, determining the relay node as the access node.
13. A communication apparatus of a wireless backhaul network, characterized by; the wireless backhaul network comprises at least one tree-shaped topological structure, each tree-shaped topological structure in the at least one tree-shaped topological structure consists of a service base station node and at least one relay node, and the root of the tree-shaped topological structure is the service base station node; the relation between any two nodes in the wireless backhaul network is a primary-secondary relation or a non-primary-secondary relation, and any two nodes in the primary-secondary relation are communicated through wireless connection; any relay node in the tree topology structure has a unique parent node; when the UE accesses from any relay node of the wireless backhaul network, the path of data communication between the UE and the service base station node is uniquely determined: a path from any one relay node to the serving base station node sequentially through each parent node;
the device comprises:
a receiving unit, configured to receive an access request transmitted by the UE;
a processing unit, configured to process the access request, generate an access response, and configure a service transmission path for the UE;
a sending unit, configured to send the access response and the service transmission path to the UE;
wherein the processing unit is to:
determining a path of the UE for transmitting the access request as the service transmission path; or
And determining a path different from the path of the UE for transmitting the access request as the service transmission path.
14. The apparatus as recited in claim 13, said processing unit to further:
after the sending unit sends the access response and the service transmission path to the UE, receiving a measurement report reported by the UE in a service transmission process with the UE;
and configuring a new service transmission path for the UE according to the measurement report, and sending the new service transmission path to the UE so that the UE performs service transmission with the device based on the new service transmission path.
15. A communications device of a wireless backhaul network, comprising:
at least one processor, and
a memory communicatively coupled to the at least one processor, a communication interface;
wherein the memory stores instructions executable by the at least one processor, the at least one processor performing the method of any one of claims 1-7 with the communications interface by executing the instructions stored by the memory.
16. A computer-readable storage medium having stored thereon computer instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1-7.
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